<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<div class="moz-cite-prefix"><br>
I think you are correct. Cliff or Sean, can you confirm?<br>
<br>
Jon<br>
<br>
<br>
<br>
On 9/26/2013 9:31 PM, André Eriksen wrote:<br>
</div>
<blockquote
cite="mid:CAMJapUbAxsYqiH2=6MTuB=Mx9n=bXdoE9iCufbG5qjGr4BhuYA@mail.gmail.com"
type="cite">
<div dir="ltr">Hi !
<div><br>
</div>
<div>I have been studying the psub spreadsheat and found a
inconsistent formula compared to the ABS Rules for Building
and Classing Underwater Vehicles.</div>
<div>It`s in cell <b>C48: Pm= Von Mises Shell Buckling Pressure
for a Cylinder.</b><br>
</div>
<div><br>
</div>
<div><span
style="font-size:11pt;line-height:115%;font-family:Calibri,sans-serif"></span><span
style="font-size:11pt;line-height:115%;font-family:Calibri,sans-serif"> C48 </span><font
face="Calibri, sans-serif"><span
style="font-size:15px;line-height:17px">=2,42*C6*(C26/C17)^2,5/(1-C7^2)^0,75<font
style="background-color:rgb(255,0,0)" color="#000000">/</font>(C14/C17-0,45*(C26/C17)^0,5)</span></font></div>
<div><font face="Calibri, sans-serif"><span
style="font-size:15px;line-height:17px">
^</span></font></div>
<div>The division sign I have highlighted above in the
spreadsheet formula should.. (if you look at the ABS formula
section 6 - 19.5.1 Inter-Stiffener Strenght).. be a
Multiplicator.</div>
<div>
<div><br>
</div>
<div>But changing this gives me a low Maximum psig for
inter-stiffeners.</div>
<div><br>
</div>
<div><br>
</div>
<div>I`m confused! Could someone please explain this? :-)</div>
<div><br>
</div>
<div><br>
</div>
<b>Best Regards</b>
</div>
<div>André Eriksen</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
Personal_Submersibles mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a>
<a class="moz-txt-link-freetext" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a>
</pre>
</blockquote>
<br>
</body>
</html>